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Fixed the c128 ram (bank 1) emd.

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This commit is contained in:
Marco van den Heuvel
2015-11-29 23:04:23 -08:00
parent cf9e7856cf
commit 18208f4d2e
2 changed files with 17 additions and 8 deletions
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23
libsrc/c128/emd/c128-ram.s
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@@ -51,7 +51,7 @@ PAGES = (TOPMEM - BASE) / 256
; Data. ; Data.
.bss .bss
curpage: .res 1 ; Current page number curpage: .res 2 ; Current page number
window: .res 256 ; Memory "window" window: .res 256 ; Memory "window"
@@ -96,7 +96,8 @@ PAGECOUNT:
; by the driver. ; by the driver.
; ;
MAP: sta curpage MAP: sei
sta curpage
stx curpage+1 ; Remember the new page stx curpage+1 ; Remember the new page
clc clc
@@ -120,6 +121,7 @@ MAP: sta curpage
lda #<window lda #<window
ldx #>window ; Return the window address ldx #>window ; Return the window address
cli
rts rts
; ------------------------------------------------------------------------ ; ------------------------------------------------------------------------
@@ -134,7 +136,8 @@ USE: sta curpage
; ------------------------------------------------------------------------ ; ------------------------------------------------------------------------
; COMMIT: Commit changes in the memory window to extended storage. ; COMMIT: Commit changes in the memory window to extended storage.
COMMIT: lda curpage ; Get the current page COMMIT: sei
lda curpage ; Get the current page
ldx curpage+1 ldx curpage+1
bmi done ; Jump if no page mapped bmi done ; Jump if no page mapped
@@ -157,7 +160,8 @@ COMMIT: lda curpage ; Get the current page
; Done ; Done
done: rts done: cli
rts
; ------------------------------------------------------------------------ ; ------------------------------------------------------------------------
; COPYFROM: Copy from extended into linear memory. A pointer to a structure ; COPYFROM: Copy from extended into linear memory. A pointer to a structure
@@ -166,6 +170,7 @@ done: rts
; ;
COPYFROM: COPYFROM:
sei
sta ptr3 sta ptr3
stx ptr3+1 ; Save the passed em_copy pointer stx ptr3+1 ; Save the passed em_copy pointer
@@ -223,7 +228,8 @@ COPYFROM:
; Done ; Done
@L4: rts @L4: cli
rts
; ------------------------------------------------------------------------ ; ------------------------------------------------------------------------
; COPYTO: Copy from linear into extended memory. A pointer to a structure ; COPYTO: Copy from linear into extended memory. A pointer to a structure
@@ -231,7 +237,8 @@ COPYFROM:
; The function must not return anything. ; The function must not return anything.
; ;
COPYTO: sta ptr3 COPYTO: sei
sta ptr3
stx ptr3+1 ; Save the passed em_copy pointer stx ptr3+1 ; Save the passed em_copy pointer
ldy #EM_COPY::OFFS ldy #EM_COPY::OFFS
@@ -288,5 +295,5 @@ COPYTO: sta ptr3
; Done ; Done
@L4: rts @L4: cli
rts

2
testcode/lib/.gitignore vendored Normal file
View File

@@ -0,0 +1,2 @@
*.o
em-test-*